Hub unresponsive

Hi everyone

Over the past few weeks, every once in a while my hub goes offline (no network, zigbee or z-wave activity). The device has a blue light. It comes back fine after power cycling it. The log activity just before the device goes offline doesn't seem to show anything of interest - I see some power updates in my most recent offline event. I don't think I've made any changes, aside from app updates and platform updates.

I saw some other posts here saying to check port 8081. I haven't tried that yet, but suspect it will not be reachable. I'll try that if it freezes again.

Hub information:
C8
2.3.9.201

Are there any other logs that I can see that might provide some direction for me?

If you have a spare power supply handy, I might suggest swapping it with the current one to see if that solves your issue. Always try port 8081 before "power cycling" the hub otherwise you risk corrupting the database (may want to do a reboot with database rebuild at this point).

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Putting the hub on a UPS would be a good idea, too.

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Long shot - but try looking for any jacked up cloud integrations if you use any. I had my C-8 hang ... I would reset. it. would be good for a few hows then dead again. It was the unofficial Ring integration... I ended up updating that app and re-logging in and it's been better since.

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To add, do a manual reboot with a database repair.

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This is also happening to me. On my C8 same version. I can see it dropped off the network (wifi/ethernet) and all automations are unresponsive. Second time it has happened in two weeks.

Do you have jumbo frames enabled anywhere on the network?

Have you checked the logs (as well as app and device stats) ?

Do you have both enabled or just one? Having both active is known to cause issues.

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I've replaced the power supply with one I had around. It didn't happen this morning; it had the past 2 mornings.

I did have some unused integrations that I thought were shutdown; I uninstalled a few things. So far, it seems fine.

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See my own thread about this issue here: C8 Hub Becomes Unreachable (Again!)

Light remains green but C8 is unreachable and unresponsive. Port 8081 is unreachable. No jumbo frames. On ethernet with wifi not enabled. On UPS. Have swapped power supplies. Have to pull the plug to get it to come back — after which I always do a reboot with a database repair. Nothing in the logs at all. Logs blank from the time I assume it froze until reboot. No error messages. No excessively large states. Tried changing the backup time to avoid conflicts. Etc.

This is starting to happen more often — always when I'm not at home or asleep. But other than that there doesn't seem to be anything in common between instances.

I have Hub Protect, which I understand would give me an extended warranty. The "what's covered by the warranty" link doesn't work, but I took a chance and submitted a ticket last week hoping to get the engineering logs looked at or something. So far I have not heard anything. (Yes I realize there was a holiday and a weekend in between. But I'm starting to wonder if the ticket I entered went out into bit heaven, never to be heard from again.)

How did you submit a ticket? Though the web page at support.hubitat.com or directly to the emailbox support@hubitat.com?

You really should keep your posts on your situation in your original topic...dropping them here will just make it harder for folks to help you, result in going over stuff already covered, etc.

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Through the web page. I know the email isn't monitored any more.

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I assumed that since there are two people in this topic reporting this problem that having a third data point might be interesting. I'm not looking for any help in this topic, which is why I listed all of the things I've already tried. My bad.

If anyone has any suggestions for my particular situation, they should post them in my topic. Please reserve this topic for the others above.

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NP, and mods may combine stuff if they think they are istances of the same thing. You're pretty far along in your topic so don't want to lose that for you.

I do have both active. Hasn't caused an issue before. This happened two weeks ago in the same way.

Okay, this is interesting. Port 8081 is alive according to nmap, but the browser never loads anything. In my mind, the OS is alive, but the service isn't answering.

image

make sure you're using http not https when you try to g\et to it as well.

I just ordered a replacement hub. I'll do a migration, and if the problem is resolved, I'll assume it was faulty hardware. If the problem persists... well, at least I'll have a faster hub.

Hub replacement complete. One interesting note: the c8pro boots a lot faster.

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